Improvement in furnaces for manufacturing- iron and steel



R088 8 AGNEW. Furnace Protegtor.

Patented luly 13, 1869.

5 V sh. m .\w

Inventors;

Witnesses;

waited grates atcnt Qhihiire.

HENDERSON ROSS AND DAVID r. AGNEW, OF PITTSBURG,-PENN- SYLVANIA.

Letters Patent No. 92,47 8, dated July 13, 1869 aatedated June 30, 1869IMPROVEMENT IN FURNACES FOR MANUFACTURING IRON AND STEEL.

The Schedule referred to in these Letters Patent and making part of thesame.

facture of Ironand Steel, the same being an additional improvement ofthe furnace for which Letters Patent ot' the United States were grantedto said HENDERSON 1toss,January 28,18(i8; and we do hereby declare thatthe iollowing isafull, clear, and exact description thereof,referencebeing had to the accompanying drawings, and to the letters ofreference marked thereon. i

The nature of our invention consists in extending the water-chamber ofthe neck of the furnace above the water-level'in said furnace-neck, toallow room for the steam and expansion of the water, caused by the heatof the furnace.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its constructionand operation.

In the accompanying drawings, which form part'of our 'specificatioxi-Figure 1 is a perspective view of our improvement in neck of a furnaceused in the manufacture of iron and steel.

- Figure 2 is a vertical and longitudinal section of the same when outthrough at line y, fig. 1.

Figure 3 is a vertical and transverse section of the same when outthrough at line 0, fig. 1.

\Ve construct the neck of the furnace in any of the known forms.

The walls ofthe neck are made of sheet-metal of any suitable thickness,and the several parts constituting the neck are riveted together, so asto make the waterchamher water-tight.

purpose of cleaning out the neck.

'The other parts of the furnace, fire-chamber, bosh, &c., areconstructed in the usual manner, and of the ordinary material.

In the accompanying drawings A is the neck of the furnace.

B is the lower-part of the stack.

0 is the water-chamber, which extends over the top, around the stack,and down the sides of the neck.

The water-level in the chamber 0 is indicated by the line f. the purposeof allowing room for the'expausion of-the water, and for steam caused bythe heat of the furnace. overflowing of the water from chamber 0.

The water-chamber O is provided with an opening, a:, which may be madelarge enough to admit the person who enters. the chamber, for cleaningor repairin it.

The chamber 0 should be provided with a suitable supply-pipe,forconveying water into the chamber, and a waste-pipe, for carrying offthe waste-water from it.

' The neck may be provided with a door, at h, for the Having thusdescribed the nature, construction, and

' operation of our improvement,

What we claim as of our invention, is

The extension of the water-chamber above the water-level, saidwater-chamber being constructed, arranged, and operating substantiallyin the manner and for the purpose herein described and set forth;

HENDERSON ROSS. D. F. AGNEW.

Witnesses: JAMES J J ouxsrou,

AARON B. GATE.

The space above the, line f is made for.

This space above the line f will preventany

